You can help spread the word about Holocaust Memorial Day by writing about it. You may already have a blog - why not add a banner to your page and link back to this site? You could ask your readers to sign our pledge.
If you don't have a blog, you can set one up easily. Some of the major blogging sites which host blogs free of charge are Blogger and Wordpress. Don't worry if you don't know much about website technology - they do all the technical things for you!